4 documents found, page 1 of 1
Impact of pervious pavement in urban areas on catchment basin recovery
Santos, Cristiano de Assumpção; Frigo, Elisandro Pires; Frigo, Késia Damaris de Azevedo; Eckert, Caroline Thaís; Dieter, Jonathan; Alves, Helton JoséUrbanization and disorderly occupation of urban areas have created several environmental problems, such as floods. Among the main causes of these problems is soil sealing associated with urban sprawl. Impervious surfaces provide less precipitation to recharge catchment basins by diverting water that should be restored in that region to other basins. This study compares two existing paving systems: concrete pave...
Efeito da porosidade sobre o manchamento de porcelanato polido
Alves, Helton JoséUniversidade Federal de Sao Carlos; Porcelain tile is a type of ceramic tile which has shown the highest worldwide expansion in recent years due to the excellent technical and esthetic qualities of the product, which have augmented the possibilities of its use in a wide variety of applications. Among the various types of porcelain tiles today, polished porcelain tile stands out because consumers greatly appreci...
Utilização da rocha agalmatolito na formulação de aditivos para o tratamento su...
Alves, Helton JoséDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Ciência e Engenharia dos Materiais.; Na busca de obter revestimentos cerâmicos com qualidade técnica e estética elevada, a indústria cerâmica tem utilizado vários aditivos que atuam no sentido de minimizar alguns tipos de defeitos provocados durante as etapas de processamento. A grande parte dos por...
Commercial titania in photocatalytic discoloration of textile industry dye resi...
Colpini, Leda Maria Saragiotto; Alves, Helton José; Santos, Onélia Aparecida Andreo dos; Costa, Creusa Maieru MacedoTextile effluents characteristically contain colored compounds resulting from dyes unfixed to fibers during the dyeing process that cause serious environmental problems. An alternative process to prevent environmental contamination by these dyes is to oxidize them through photocatalysis in the presence of semiconducting oxides such as TiO2. In this sense, commercial TiO2 has been used as a catalyst in the photo...